Trump’s choice of Kelly — and his continued deliberations about tapping as many as two more military figures for other posts — has intensified worries among some members of Congress and national security experts that the new administration’s policies may be shaped disproportionately b...

Set in remote mountains on the edge of the Tibetan Plateau, the bitcoin “mine” is strategically placed next to a hydroelectric power plant. (Paul Ratje/For The Washington Post) Inside a metal shed in the Tibetan highlands of western China, thousands of microprocessors flank narrow cor...

We now have a new effort to solve these problems. Two Stanford University economists — Charles I. Jones and Peter J. Klenow — have devised a way to relate a nation’s economic well-being to four factors: 1) consumption per person, adjusted for inflation; 2) inequality, reflected in dif...

A public service announcement against the spread of Aedes mosquitoes, a carrier for the Zika virus, in the Aljunied Crescent neighborhood of Singapore on Aug. 29. (Roslan Rahman/Agence France-Presse via Getty Images) Global health officials stepped up defensive measures against Zika o...

A public service announcement against the spread of Aedes mosquitoes, a carrier for the Zika virus, in the Aljunied Crescent neighborhood of Singapore on Aug. 29. (Roslan Rahman/Agence France-Presse via Getty Images) Global health officials stepped up defensive measures against Zika o...

A Bitcoin, virtual currency, coin is seen in an illustration picture taken at La Maison du Bitcoin in Paris in July 2014. (REUTERS/Benoit Tessier) The hotel room was wired with cameras and microphones, and in it sat $30,000 in fake $100 bills. Miami Beach Detective Ricardo Arias, work...

Nike HyperAdapt 1.0 sneakers with self-tightening laces. (Courtesy of Nike) Nike announced this week that the self-tightening sneakers that many have long dreamed about will arrive in time for the winter holidays. HyperAdapt 1.0, as the shoes are called, had the Internet and social-me...

A leather handbag by Michael Kors. (Martin Divisek/Bloomberg) Michael Kors and Coach are keenly aware of their central problem in the U.S. market. They are ostensibly luxury brands, selling an aspirational lifestyle — and yet you can find their handbags at mid-tier, everyman departmen...